Speaker base



FIG. 1 is a perspective view of a speaker base showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in FIGS. 1 and 6 depict portions of the speaker basethat form no part of the claimed design.

CLAIM The ornamental design for a speaker base, as shown and described.